/**
 * This file is part of 1genia trampoline
 * Copyright (C) 2007 1genia (contact@1genia.com)
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; version 3 of the License. 
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details. 
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; see the file COPYING.TXT.  If not,
 * write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA 02110-1301, USA. 
 **/
package com.genia.toolbox.web.gwt.basics.process;

import java.util.ArrayList;
import java.util.List;

import com.genia.toolbox.basics.exception.BundledException;
import com.genia.toolbox.basics.i18n.I18nMessage;
import com.genia.toolbox.web.gwt.basics.client.exception.GwtBundledException;
import com.genia.toolbox.web.gwt.basics.client.i18n.GwtI18nMessage;

/**
 * this class allows to translate server exceptions to exceptions handled by
 * GWT.
 */
public class ProcessException
{

  /**
   * translate a <code>BundledException</code> to a
   * <code>GwtBundledException</code>.
   * 
   * @param exception
   *          the exception to translate
   * @return the translated exception
   */
  public static GwtBundledException translateException(final BundledException exception)
  {
    final I18nMessage message = exception.getI18nMessage();
    final GwtI18nMessage gwtMessage = new GwtI18nMessage();
    gwtMessage.setKey(message.getKey());
    final List<String> gwtParameters = new ArrayList<String>();
    for (final Object object : message.getParameters()) {
      if (object == null) {
        gwtParameters.add(null);
      }
      else {
        gwtParameters.add(object.toString());
      }
    }
    gwtMessage.setParameters(gwtParameters.toArray(new String[gwtParameters.size()]));
    return new GwtBundledException(exception, gwtMessage);
  }
}
